Why was self sufficiency important to a country practicing mercantilism?

Early mercantilism meant primarily aiming to reduce imports. This issue is related mainly to articles of luxury. The mercantilists believed fact that the foundation of the wealth of the state is a positive trade balance - the dominance of exports over imports. Source of such beliefs lay still in the medieval practice of governance - the monarchs gather financial reserves necessary for an effective policy. However, in the developed theory of mercantilism, welfare of the residents and the strength of the state directly combined with the development of the industry. It is associated with it hopes for economic self-sufficiency of the country. In addition, the mercantilists preached direct relationship between economic power of the country's human potential.

The preamble is just the beginning to the constitution and introduces some of the core values America was built on.

Explanation:

The preamble goes as follows, "We the people of the United States, in order to form a more perfect union, establish justice, insure domestic tranquility, provide for the common defense, promote the general welfare, and secure the blessings of liberty to ourselves and our posterity, do ordain and establish this Constitution for the United States of America."